Bearing for drying cylinders and the like



April 27 1926. 1,582,246

A. BUCHANAN BEARING FOR DRYING CYLINDERS AND THE LIKE Filed Nov. 23. 1923 2 Sheets-Sheet l i .3! z 1 E I April 27 1926. 1,582,246

A. BUCHANAN BEARING FOR DRYING CYLINDERS AND THE LIKE Filed Nov. 23. 1923 2 Sheets-Sheet 2 6 zgw Patented Apr. 27,

UNITED, STATES 1. .24 PATENT OFFICE.

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To on whom it may concern:

Be it known that I, ALBERT BUCHANAN, a British subject, residing at Sunnyside, Reddish Vale, near Stockport, in the county of Chester, England, have invented new-and useful Im rovements in Bearings for Dry in Cylin ers and the like.

is invention relates to improvements in doll head bearings as used in drying cylinders and the like of the type wherein a slidable steam-ti ht contact is made between the trunnion end and a non-rotary member of the bearing, the contact between the:c

two said members being effected by contacting fiat surfaces. The ob'ect of my invention is the production 0 such. doll head bearing which is simple to construct and 1 which is steam-tight under all normal condirection, so that to provide a perfect doll ditions and whic is more readily maintained clean and in working order than is the case with most bearings of this type heretofore employed.

In cylinders of the said type it is well known that when the temperature thereof is raisedthe cylinder trunnion expands, the expansion laterally or axially being considerably greater than'expansion in any other head, it is necessar to employ devices which allow automatica 1y this comparatively largelateral expansion and also the expansions of smaller magnitudes inother direc' tions, maintaining a steam-tight contact under all usual conditions.

The doll head bearing according to my invention affords these. said desiderata.

To attain my object I make use in the doll head bearing of a nonrotary member carrying a ring of material sufficiently flexible to maintain a steam-tight contact therein the said non-rotary member or block being ca- I pable automatically of slight universal move ment and also capable of considerable movement laterally, and having which contacts with the faced end of the cylinder trunnion or of a member mounted between the said trunnion and the block, the contact between them being maintained by a spring.

In order that my said invention may be readily understood, I have hereunto aplpended sheets of drawings illustratiye thereof, to which by filgures and letters, reference is made in the fo owing description.

Fig. I is a sectional side elevation of my improved doll head bearing indicatedike a faced par-ft Fig. 2 is an end elevation of the framework thereof.

3 is a sectional side elevation of a F1 moded form of bearing which I may emplciy.

1g. 4 ise sectional side elevation of another modification.

Similar figures and letters of reference parts throughout the several views.

In carrying my invention into effect I make use of a cap 10 of hard metal which is screwed to the trunnion end, a washer 11 of rubber or other suitable material being inserted between the end of the trunnion and the said cap; The end surface of. the said cap is preferably machined and makes contact with the corresponding face upon ablock 7, so that between the two members 1Q and 7 asteam tight contact can be maintained by pressing the seating 7 against the cap 10. The block 7 has mounted upon it a ring 6 of india rubber composition or like material this being held'in position by means of a castle nut 5, as shown by Fig. 1. The rin 6 makes contact with the outer wall of the that, whilst its flexibility allows its block 7 a slight universal movement, it maintains a steam tight contact with said casing. The block 7 is pressed against the flat surface of the cap 10 by means of the steam pressure within the bearing assisted by the spring 4, one end of which abuts against the cap 2.

Between the detachab e cap 2 which aring casing a in such manner screws into the end of the casing, and. the

casing I preferably insert a ring 3 of asbestos or other suitable material to ensure a steam tight joint. An opening 23 is formed in the base of the casing, and this communicates with the opening within the block 7 and with the hollow interior of the trunnion. In order that the flat surfaces of the cap 10 and block 7 may be maintained constantly lubricated an oil ring 9 is employed.

An opening 9 is provided which has a metal 1 and having a-packing the trunnion passes, a packing ring 14 being supplied if desired, as shown by Fig. 1. Fit- "ting within the casing a is a ball race for a space is afforded so that should wh ch the .trunnion expand in length, the ball race has ample room for lateral sliding movement.

catmg type. In this case as shown by Fig. 3

a ring 6 of rubber composition is mounted flush against the machined surface of the cap 10, this being fixed to the trunnion end ring 11 to make this joint steam tight. f course, in this case it is also necessary to use a ring 6 mounted on the member 7 similar to that illustrated in Figure 1 to prevent escape of steam-from the bearing.

Such being-the nature and object of my said invention; what I claim is 1. In a bearing for drying cylinders, a combination comprising a trunnion with a faced end, a bearing casing, a spring pressed universally accommodating non-rotary metal block having a faced part contacting with said trunnion end, and a ring of flexible material mounted on said block and making steam-tight contact with the bearing casing.

2. In a bearing for drying, cylinders, a combination comprising a trunnion with a faced end, a bearing casing, a spring pressed universally accommodating non-rotary metal block having a faced part contacting with said trpnnion end, a ring of flexible material mounted on said block and making steamti'ght contact with the bearing casing, and a slidable ball race mounted on said trunmom.

3. In abearing for drying cylinders, a combination comprising a trunnion with a faced end, a bearing casing, a spring pressed universally accommodating metal block, a flexible ring mounted on said block and making sliding contact with said trunnion end, and a second ring of flexible material on said block making steam-tight contact with the bearing casing.

4. In a bearing for drying cylinders, a combination comprising a trunnion with a faced end, a bearing casing, a universally accommodating non-rotary metal block having a faced part contacting with said trunnion end, a. spring for maintaining contact between the trunnion and said block, means for regulating the compression of said spring, and a flexible ring mounted on said block and making steam-tight contact with the bearing casing.

In testimony whereof I have signed my name to this specification.

ALBERT BUCHANAN. 

